【摘要】：磁流體是一種具有超順磁性的液態(tài)物質(zhì),主要由納米級(jí)磁性顆粒、吸附在顆粒表面的分散劑以及基載液三部分組成。在合適的磁場(chǎng)作用下,磁流體可以被定位、定向和移動(dòng)�；诖颂匦�,磁流體已被成功地應(yīng)用于機(jī)械旋轉(zhuǎn)動(dòng)密封及潤(rùn)滑之中。 文中涉及的磁性功能表面是一種具有規(guī)則排布的微小磁性薄膜陣列表面。由于微小磁性薄膜陣列可在基體表面產(chǎn)生周期性梯度磁場(chǎng),故本文以磁流體為潤(rùn)滑介質(zhì),探索其潤(rùn)滑特性。 本文采用微細(xì)電解及電沉積技術(shù)加工出具有特定參數(shù)的磁性功能表面；隨后利用電磁場(chǎng)分析軟件對(duì)該類磁性功能表面進(jìn)行靜磁場(chǎng)分析；并以磁流體為潤(rùn)滑介質(zhì),對(duì)該功能表面的動(dòng)/靜摩擦學(xué)特性及粘附行為進(jìn)行了試驗(yàn)研究,與無(wú)磁試樣的試驗(yàn)結(jié)果進(jìn)行了對(duì)比,其結(jié)論如下： (1)磁性功能表面在高速條件下顯示出優(yōu)異的減摩效果,且隨著磁性薄膜厚度和面積率的增加,減摩效果越明顯,而在低速條件下,磁性功能表面則表現(xiàn)出增摩效果；對(duì)比高速重載下的磨損情況,磁性功能表面能有效降低磨損,且隨著磁性薄膜厚度和面積率的增高,其減磨效果得到適度加強(qiáng)。 (2)靜摩擦試驗(yàn)分析表明,磁性功能表面與無(wú)磁試樣表面相比,在輕載條件下能顯著降低靜摩擦系數(shù),且隨著磁性薄膜厚度和面積率的增大,靜摩擦系數(shù)隨之逐漸減小；而在重載條件下,磁性功能表面對(duì)靜摩擦系數(shù)變化的影響不顯著。 (3)在粘附特性方面,磁性功能表面能顯著提高試樣間的粘附力,隨著磁性薄膜厚度和面積率的增高,粘附力也隨之逐漸增大。
[Abstract]:Magnetic fluid is a kind of superparamagnetic liquid material, which consists of three parts: nanometer magnetic particles, dispersant adsorbed on the surface of particles and base liquid. Under the appropriate magnetic field, the magnetic fluid can be located, orientated and moved. Based on this characteristic, magnetic fluid has been successfully applied to mechanical rotating dynamic seal and lubrication. The magnetic functional surface in this paper is a small magnetic thin film array surface with regular arrangement. Because the micromagnetic thin film array can produce periodic gradient magnetic field on the substrate surface, the lubrication characteristics of the micromagnetic film array are investigated by using the magnetic fluid as the lubricating medium in this paper. In this paper, micro-electrolysis and electrodeposition techniques are used to fabricate the magnetic functional surfaces with specific parameters, and then the magnetostatic magnetic field analysis of the magnetic functional surfaces is carried out by using the electromagnetic field analysis software. The dynamic / static tribological characteristics and adhesion behavior of the functional surface were investigated by using magnetic fluid as lubrication medium, and the results were compared with those of the non-magnetic specimen. The results are as follows: (1) the magnetic functional surface exhibits excellent antifriction effect at high speed, and the antifriction effect increases with the increase of the thickness and area ratio of the magnetic film, but at low speed, the antifriction effect of the magnetic functional surface increases with the increase of the thickness and area rate of the magnetic film. On the other hand, the magnetic functional surface has the effect of increasing friction. Compared with the wear under high speed and heavy load, the magnetic functional surface can effectively reduce the wear, and with the increase of the thickness and area rate of the magnetic film, the wear reduction effect is moderately enhanced. (2) static friction test shows that the static friction coefficient of the magnetic functional surface decreases significantly under light load compared with that of the non-magnetic sample surface, and the static friction coefficient decreases gradually with the increase of the thickness and area ratio of the magnetic film. But under the heavy load condition, the influence of the magnetic functional table on the static friction coefficient is not significant. (3) in the aspect of adhesion properties, the adhesion force of the magnetic functional surface can be increased significantly. With the increase of the thickness and the area ratio of the magnetic film, the adhesion force increases gradually.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TB43

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 朱潤(rùn)生,張建斌,王之珊;電場(chǎng)影響鐵磁流體摩擦系數(shù)的試驗(yàn)研究[J];北京航空航天大學(xué)學(xué)報(bào);1999年05期

2 池長(zhǎng)青;均勻磁場(chǎng)中鐵磁流體潤(rùn)滑的平板滑塊的性能[J];北京航空航天大學(xué)學(xué)報(bào);2001年01期

3 趙猛;鄒繼斌;胡建輝;;磁場(chǎng)作用下磁流體粘度特性的研究[J];機(jī)械工程材料;2006年08期

4 池長(zhǎng)青;均勻磁場(chǎng)中鐵磁流體潤(rùn)滑的軸頸軸承[J];航空動(dòng)力學(xué)報(bào);2000年02期

5 李健,湯云峰;磁流體應(yīng)用于滑動(dòng)摩擦的潤(rùn)滑理論及實(shí)驗(yàn)研究[J];電工材料;2004年03期

6 朱潤(rùn)生,張建斌,王之珊;滑動(dòng)摩擦主動(dòng)控制的試驗(yàn)研究[J];摩擦學(xué)學(xué)報(bào);1999年04期

7 蒲吉斌;萬(wàn)善宏;胡天昌;王立平;胡麗天;;離子液體/織構(gòu)化類金剛石碳復(fù)合潤(rùn)滑薄膜的構(gòu)筑及其摩擦學(xué)性能的研究[J];摩擦學(xué)學(xué)報(bào);2012年05期

8 胡國(guó)祥;磁流體潤(rùn)滑滑動(dòng)軸承承載能力計(jì)算與分析[J];潤(rùn)滑與密封;1996年05期

9 李洪帥;李學(xué)慧;董桂馥;安宏;馬明來(lái);高瑩瑩;;磁性液體摩擦學(xué)性能研究[J];潤(rùn)滑與密封;2009年11期

10 李浩侖;陳同舟;涂杰松;;靜摩擦測(cè)定儀器、方法和研究進(jìn)展[J];潤(rùn)滑與密封;2010年12期

，

本文編號(hào)：2401072